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Initiation of eukaryotic DNA replication is a tightly controlled process. Replication initiates at multiple specific sites (replication origins) that have been licensed for replication, following the cell cycle-dependent, multi-step assembly of specific factors. Thus, replication origins occur in two chromatin states: a replication-competent pre-replicative (pre-RC) state, when a number of repl...

background: early diagnosis of brain tumors has significant effect on the treatment process. brain metastatic tumors are usually diagnosed following the neurological symptoms in patients or incidentally after computerized tomography (ct) scan and magnetic resonance imaging (mri) requests of the brain. objectives: implementation of a new method for being informed about the origin of brain tumors...

the main goal of this study is the effectiveness evaluation of socio-demographic variables on increasing marriage age of working female students in university of tehran. using statistical method and questionnaire technique, 387 married female students have been participated in this study by cluster-sampling method. the explanatory variables of female students increase marriage age are: educatio...